Yazar "Pütün, Ayşe Eren" için WoS İndeksli Yayınlar Koleksiyonu listeleme
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Converting of oil shale and biomass into liquid hydrocarbons via pyrolysis
Kılıç, Murat; Pütün, Ayşe Eren; Uzun, Başak Burcu; Pütün, Ersan (Pergamon-Elsevier Science LTD, 2014)In this study, co-pyrolytic behaviors of oil shale and Euphorbia rigida were investigated at different temperatures in a fixed bed reactor at 450, 500, and 550 degrees C with a heating rate of 10 degrees C/min in the ... -
The effect of pyrolysis atmosphere on bio-oil yields and structure
Önal, Eylem; Uzun, Başak Burcu; Pütün, Ayşe Eren (Taylor & Francis Inc, 2017)A food industry waste, almond shell, was pyrolyzed under three different environment static, nitrogen, and steam to produce bio-oil and its derivatives. The oil yield obtained at pyrolysis temperature of 600 degrees C was ... -
Effect of steam on the pyrolysis of biomass
Pütün, Ayşe Eren; Özbay Nurgül; Pütün, Ersan (Taylor & Francis Inc, 2006)A comparative study of the thermochemical behavior of cottonseed cake in static, nitrogen and steam atmospheres has been carried out. The influence of the different atmospheres in the yield and composition were observed. ... -
An energy crop for producing bio-fuel: Euphorbia rigida
Uzun, Başak Burcu; Pütün, Ayşe Eren; Apaydın, E; Pütün, E (Norwegian University Sci Technol, 2005)Biomass and energy crops are the renewable energy sources, which is often believed to have the highest potential to contribute to a future sustainable energy supply to world's energy. Bioenergy is expected to become one ... -
Equilibrium, kinetic, and thermodynamic studies of the adsorption of Fe(III) metal ions and 2,4-dichlorophenoxyacetic acid onto biomass-based activated carbon by ZnCl2 activation
Kırbıyık, Cisem; Pütün, Ayşe Eren; Pütün, Ersan (Elsevier Science BV, 2017)This study investigated the preparation of activated carbon from low-cost biomass as precursor and the using of obtained activated carbon for the removal of Fe(III) and 2,4-D pollutants from model solution. The different ... -
Equilibrium, Thermodynamic, and Kinetic Studies for the Adsorption of Cadmium(II) Ions onto Activated Carbon Prepared from Euphorbia rigida by Chemical Activation
Kılıç, M.; Apaydın-Varol, Esin; Pütün, Ayşe Eren (Taylor & Francis Inc, 2014)Equilibrium, thermodynamic, and kinetic studies were carried out for the adsorption of cadmium(II) ions from aqueous solution using high surface area (2,613 m(2)/g) microporous activated carbon prepared from Euphorbia ... -
Evaluation of Field Debris of Chickpea Husk as a Low-Cost Biosorbent for Removal of Methylene Blue From Aqueous Solutions
Kılıç, Murat; Cepelioğullar, Özge; Özsin, Gamzenur; Uzun, Başak Burcu; Pütün, Ayşe Eren (Gazi University, Fac Engineering Architecture, 2014)In the present study, an important agricultural waste, chickpea straw, was evaluated as biosorbent material for the removal of basic dyes from aqueous solutions. Effects of solution pH, biosorbent dosage, initial dye ... -
The Evaluation of Mesoporous Materials as Catalyst in Fast Pyrolysis of Wheat Straw
Ateş, Funda; Tophanecioğlu, Sibel; Pütün, Ayşe Eren (Taylor & Francis Inc, 2015)In this study, wheat straw was chosen as a biomass sample and the fast pyrolysis of this sample was carried out with or without catalyst at different conditions in a well-swept fixed-bed reactor. Experiments were carried ... -
An experimental study on bio-oil production from co-pyrolysis with potato skin and high-density polyethylene (HDPE)
Önal, Eylem; Uzun, Başak Burcu; Pütün, Ayşe Eren (Elsevier Science BV, 2012)In order to investigate the synergistic effect of high dense polyethylene (HOPE) addition to potato skin (pS) during co-pyrolysis, pure HDPE was pyrolysed as a model compound for determination of the optimum process ... -
Fast pyrolysis of sesame stalk: yields and structural analysis of bio-oil
Ateş, Funda; Pütün, Ersan; Pütün, Ayşe Eren (Elsevier Science BV, 2004)Sesame stalk pyrolysis experiments were conducted in a fixed-bed reactor in an attempt to determine the effects of pyrolysis temperature, particle size, heating rate and sweeping gas (N-2) flow rate on the product yields ... -
Fast pyrolysis of soybean cake: Product yields and compositions
Uzun, Başak Burcu; Pütün, Ayşe Eren; Pütün, Ersan (Elsevier Sci LTD, 2006)This study was an investigation of the role of important parameters influencing pyrolysis yields from soybean cake. Experiments were carried out at temperatures ranging from 400 to 700 degrees C, for various nitrogen flow ... -
Fixed bed pyrolysis of Euphorbia rigida with different catalysts
Ateş, Funda; Pütün, Ayşe Eren; Pütün, Ersan (Pergamon-Elsevier Science LTD, 2005)Since Euphorbia rigida is a celluloid plant with low fat content, the oil yields of previous fixed bed pyrolysis studies were low. In order to increase the oil yield, biomass pyrolysis experiments were performed in a fixed ... -
Fixed-bed catalytic pyrolysis of cotton-seed cake: Effects of pyrolysis temperature, natural zeolite content and sweeping gas flow rate
Pütün, Ersan; Uzun, Başak Burcu; Pütün, Ayşe Eren (Elsevier Sci LTD, 2006)Catalyzed pyrolysis of cotton-seed cake was studied under different experimental conditions. Variables investigated were pyrolysis temperature, zeolite content and sweeping gas flow rate. Experiments were carried out ... -
Fixed-bed pyrolysis and hydropyrolysis of sunflower bagasse: Product yields and compositions
Pütün, Ayşe Eren; Koçkar, Ömer Mete; Yorgun, S; Gerçel, Hasan Ferdi; Andresen, J; Snape, CE; Pütün, Ersan (Elsevier Science BV, 1996)Pyrolysis and hydropyrolysis experiments at different temperatures, heating rates and pressures have been conducted on a sample of sunflower pressed bagasse to investigate the effect of particle size, sweep gas velocity, ... -
Fixed-bed pyrolysis of cotton stalk for liquid and solid products
Pütün, Ayşe Eren; Özbay Nurgül; Önal, EP; Pütün, Ersan (Elsevier Science BV, 2005)The pyrolysis of cotton stalk was studied for determining the main characteristics and quantities of liquid and solid products. Particular variables investigated were temperature (from 400 degrees C to 700 degrees C), ... -
Fixed-bed pyrolysis of cottonseed cake: Product yields and compositions
Pütün, Ayşe Eren; Özbay Nurgül; Koçkar, Ömer Mete; Pütün, Ersan (Taylor & Francis, 1997)Fired-bed pyrolysis experiments have been conducted on a sample of cottonseed cake to determine the possibility of being a potential source of renewable fuels and chemical feedstocks. The effects of heating rate, pyrolysis ... -
Fixed-bed pyrolysis of hazelnut shell: A study on mass transfer limitations on product yields and characterization of the pyrolysis oil
Koçkar, Ömer Mete; Onay, O; Pütün, Ayşe Eren; Pütün, E (Taylor & Francis Inc, 2000)Fixed-bed slow and fast pyrolysis experiments have been conducted on a sample of hazelnut shelf. The experiments were performed in two different pyrolysis reactors, a fixed-bed Heinze and a well-swept fixed-bed tubular ... -
Humulus lupulus As a Raw Material for Bio-oil Production via Slow Pyrolysis
Apaydın Varol, Esin; Kılıç, Murat; Pütün, Ayşe Eren; Degirmen, Görkem; Pütün, Ersan (Gazi University, 2017)Humulus lupulus, a kind of hop plant agricultural waste was pyrolysed in a fixed bed reactor with a heating rate of 10 degrees C min(-1) in the presence of N-2 atmosphere. The effect of pyrolysis temperature was investigated ... -
Hydropyrolysis of extracted Euphorbia rigida in a well-swept fixed-bed tubular reactor
Gerçel, Hasan Ferdi; Pütün, Ayşe Eren; Pütün, Ersan (Taylor & Francis Inc, 2002)Tubular reactor fixed-bed hydropyrolysis experiments have been conducted on a sample of extracted Euphorbia rigida to determine the possibility of being a potential source of renewable fuels and chemical feedstock. The ... -
Insights into pyrolysis and co-pyrolysis of biomass and polystyrene: Thermochemical behaviors, kinetics and evolved gas analysis
Özsin, Gamzenur; Pütün, Ayşe Eren (Pergamon-Elsevier Science LTD, 2017)The purpose of this study was to investigate the effect on polystyrene (PS) during co-pyrolysis with biomass through thermal decomposition. The model-free iso-conversional methods (Kissinger, Friedman, Flynn-WallOzawa, ...